AS/NZS 4200.1:2017 PDF Download

AS/NZS 4200.1:2017 is a standard that specifies the requirements for materials used as pliable building membranes and underlays. These materials are commonly referred to as "sarking" or "underlay" and are used to provide various control functions in buildings. The standard covers their use as water, thermal, vapor, and air control barriers.

The standard defines the requirements for these materials when used independently or as a facing to other materials such as insulation. It ensures that the materials meet specific performance criteria for each control function. However, it should be noted that the standard does not cover materials used in air-handling ducts and building services, under concrete slabs on-ground, or waterproofing above flat concrete roofs.

For thermal performance requirements of reflective insulation pliable building membranes and faced building blankets, AS/NZS 4859.1 should be referred to. This standard provides more specific guidelines for the thermal performance of these materials.